The most common and most likely answer to this crossword clue is the 11 letter word HEART-THROB
H
E
A
R
T
-
T
H
R
O
B
More clues leading to the result HEART-THROB
- Both rather drunk, fans may swoon over him
- Try dry fleece worn by hot, dishy type
- Without this star, we should all be dead
- Attractive guy to try avoiding booze – he relies on barley-water, principally
- Pop idol perhaps drumming with vigour
- Superstar idol? Time to get into hard world, little fellow!
- Matinee idol‘s hat brother modelled
- Star's talent seen in both her flicks
Buddy explains!

The straight part
We know that "Star" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case star = heart-throb.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.